Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Monday, July 6, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 11:54 pm (2.1 ft)
Next high tide : in 32m at 5:54 pm (6.5 ft)
Sunset today : 8:51 pm
Sunrise tomorrow : 5:52 am
Moon phase : Third Quarter (61% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Jun 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:185.96:26-1.56:092.25:468:42Full Moon1Sat
2Sun12:288.22:086.17:11-1.96:572.35:468:42Full Moon2Sun
3Mon1:148.32:576.27:57-2.07:492.35:468:43Waning Gibbous3Mon
4Tue2:038.13:486.38:45-1.98:442.35:458:44Waning Gibbous4Tue
5Wed2:557.74:406.49:34-1.69:442.35:458:44Waning Gibbous5Wed
6Thu3:527.15:336.510:25-1.110:512.25:458:45Third Quarter6Thu
7Fri4:556.56:266.611:17-0.55:458:46Third Quarter7Fri
8Sat6:055.87:206.812:052.012:120.15:448:46Third Quarter8Sat
9Sun7:225.38:117.11:191.61:090.85:448:47Third Quarter9Sun
10Mon8:415.09:017.32:301.02:071.35:448:47Waning Crescent10Mon
11Tue9:575.09:477.53:310.53:021.85:448:48Waning Crescent11Tue
12Wed11:045.110:307.64:24-0.13:552.25:448:48Waning Crescent12Wed
13Thu12:005.35:11-0.54:442.45:448:49Waning Crescent13Thu
14Fri12:495.55:53-0.85:292.65:448:49New Moon14Fri
15Sat1:315.66:32-0.96:122.75:448:50New Moon15Sat
16Sun12:267.52:105.77:09-0.96:532.85:448:50New Moon16Sun
17Mon1:027.32:475.77:45-0.97:342.95:448:50New Moon17Mon
18Tue1:397.13:245.78:21-0.78:152.95:448:51Waxing Crescent18Tue
19Wed2:166.84:015.78:56-0.58:583.05:448:51Waxing Crescent19Wed
20Thu2:546.44:395.89:32-0.29:462.95:458:51Waxing Crescent20Thu
21Fri3:376.05:195.910:090.210:402.95:458:51Waxing Crescent21Fri
22Sat4:265.56:006.010:480.611:402.75:458:51First Quarter22Sat
23Sun5:245.16:436.211:291.05:458:52First Quarter23Sun
24Mon6:344.77:266.512:462.312:161.55:468:52First Quarter24Mon
25Tue7:504.68:116.91:501.81:091.95:468:52First Quarter25Tue
26Wed9:074.68:577.32:491.12:062.25:468:52Waxing Gibbous26Wed
27Thu10:174.99:447.73:430.33:052.45:478:52Waxing Gibbous27Thu
28Fri11:185.210:328.14:33-0.44:012.55:478:52Waxing Gibbous28Fri
29Sat12:135.65:21-1.14:562.55:488:52Full Moon29Sat
30Sun1:036.06:08-1.65:492.45:488:52Full Moon30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9418801)

Common Questions About Eureka, CA Tides

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What time does the tide turn (slack tide) in Eureka, CA today?

Slack tide in Eureka, CA is approximately 8:54 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Eureka, CA?

Eureka, CA is currently in a transitional phase. Tonight's moon is 61% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are Eureka, CA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Eureka, CA?

Tide predictions for Eureka, CA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Eureka, CA?

Tide data for Eureka, CA is sourced from NOAA Station #9418801. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9418801.

What is the moon phase in Eureka, CA tonight?

Tonight the moon over Eureka, CA is Third Quarter (61% illuminated). This places Eureka, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA